Occurrence of wide anoxic black areas in the East Frisian Wadden Sea at the beginning of the summer of 1996 has highlighted adverse effects of eutrophication once again and reminded of the persisting… (More)

In this article we develop a comprehensive conceptual framework for resource efficiency indicators with a consistent link of resource use to the socio-economic system and activities therein as well… (More)

At the same time harbour porpoises, that had died of a similar virus, appeared stranded on the beaches. Two years later another mass die-off occurred in the Mediterranean striped dolphin populations.… (More)